form-validation

Schema-first validation with Zod enforces a single source of truth: define your validation rules once in Zod, then derive TypeScript types automatically via z.infer. This eliminates type mismatches between your schema and types, ensuring runtime validation and compile-time safety across your form.

Yes. Zod integrates with React form libraries through resolver adapters like zodResolver. Wire your Zod schema into useForm or TanStack Form to handle onChange, onBlur, and onSubmit validation patterns, cross-field checks, and async validations automatically.

Zod supports cross-field validation through refine() and superRefine() methods. Define your schema to compare multiple fields, then integrate it via your form library's resolver. This validates relationships between fields as a single cohesive rule.

Zod-based validation supports configurable timing presets: onChange for immediate feedback, onBlur for stability after user focus loss, or onSubmit for final validation. Balance responsiveness with input stability by choosing the pattern that fits your form's UX goals.

Yes. Zod supports async validations via refine() and superRefine() with async callbacks. Integrate async rules into your schema, wire it through your form library's resolver, and it will handle asynchronous validation alongside synchronous rules.

Yes. Zod is framework-agnostic and works across React, Vue, vanilla JavaScript, or any UI layer. Define your schema once and adapt it to your framework using the appropriate resolver or validation integration pattern for that ecosystem.